As they say, all good things must be replaced by superior technology. Or something like that.
Twellio has now been shut down. I hope you have found it useful these past few years.
If you are a current subscriber, you should have received an email with more info. If you were looking to sign up, fear not! IFTTT is coming to the rescue. I have created a recipe to duplicate Twellio's functionality with their new Trello integration. You can find the link below.
Thank you all for your interest in Twellio!